I really like it so far. Clever mechanics. I like how you guide the mouse backwards, starting at the cheese, and the visuals are adorable. I love the chubby mouse, and the fork and knife animation is cute, though good choice making it skippable.
My only complaints are that the mouse seems to get stuck on corners too easily, and that the music is interrupted if you restart the level or pause/unpause. I think in games that may require restarting fairly often, it's best to have the music play continually, otherwise it can cause frustration.
EDIT: it's also slightly difficult to zoom. Maybe adding a zoom button and dragging with your finger to move would be better?